A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.
Classification: Clock or watch glass; glasses for noncorrective spectagles not optically worked; hollow glass spheres and their segments for the mnfctr ofsuch glasses
NSN 6650-01-418-0790
NSN 6130-01-411-2586
NSN 5999-01-274-6623
NSN 4140-01-515-8128
NSN 6150-01-449-0958
NSN 5895-01-576-3259
NSN 6220-00-862-9133
NSN 5950-01-517-9003
NSN 5975-01-418-0376
NSN 6610-01-460-0670
NSN 6685-01-543-9790
NSN 5998-01-442-9119